
ACOUSTICS - REFERENCE ZERO FOR THE CALIBRATION OF AUDIOMETRIC EQUIPMENT - REFERENCE EQUIVALENT THRESHOLD SOUND PRESSURE LEVELS FOR PURE TONES AND INSERT EARPHONES
出版:British Standards Institution

專家解讀視頻
Specifies reference equivalent threshold sound pressure levels (RETSPL) for the calibration of pure tone audiometers. Also gives detailed definitions, diagrams and annexes. AMD 9427 RENUMBERS THIS STANDARD
ISO 389-2:1994(R2014) - Identical